bf8905fcc9
The init marker settled it. The diagnostic reported "THE REPORTER LOADED BUT RECORDED NO TEST EVENTS — the events file contains only the reporter's own reporter:init marker", which refutes the reporter-never-loaded hypothesis and leaves exactly one explanation. The runner spawns a child process per test file and surfaces a subtest's test:start / test:pass / test:fail to the parent's reporter only once the child REPORTS that test — which happens when it completes. The fixture hangs forever, so it never completes, so it never reports. I had recorded exactly those three event types: the precise set that a hang guarantees you will never see. The feature could not have worked for the case it was built for. test:enqueue and test:dequeue are emitted by the runner as it queues and begins each file, independent of anything inside finishing. test:dequeue is what actually means "in flight", and it is now the primary signal, with test:start kept as a secondary one. A file is in flight when it has been dequeued and has no terminal event. The four branches now describe states that are all real: the events file absent (reporter never loaded); the init marker alone (the runner dequeued nothing at all — genuinely surprising now rather than the expected outcome); everything dequeued and terminated (the files finished and the process hung afterwards, a handle leak); and one or more dequeued-but-unterminated files, named, which is the case this whole feature exists to report. Verified against the exact shape the real hang produces, by executing analyzeChunkEvents on a synthetic events file: init + enqueue + dequeue with no terminal event reports hangs.test.cjs as in flight, and appending a test:pass clears it. Four more unit tests cover the ordering and multi-file cases with no subprocess, so this logic is now checkable without a runner round-trip — which matters, because every defect in this feature so far was visible only remotely. T1 is untouched and should now pass for the right reason. Verification runs on the remote runner. Refs #4012
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69 KiB